//打开百度地图
function open_bmap(dname, lng, lat) {
    var uri = 'baidumap://map/direction?destination=name:'+dname+'|latlng:'+lat+','+lng+'&mode=driving&src=andr.cheyw';
    api.openApp({
        uri: uri,
        iosUrl: uri
    }, function(ret, err) {
        console.log(JSON.stringify(err))
        if(err.msg=="Application not installed" || err.msg=="未找到可执行的应用") {
            showToast("请先安装百度地图");
        }
    });
}

//打开高德地图
function open_amap(dname, lng, lat) {
    var uri = 'amapuri://route/plan/?dlat='+lat+'&dlon='+lng+'&dname='+dname+'&dev=0&t=0';
    var iosUrl = 'iosamap://path?sourceApplication=cheyw&dlat='+lat+'&dlon='+lng+'&dname='+dname+'&dev=0&t=0';
    api.openApp({
        uri: uri,
        iosUrl: iosUrl
    }, function(ret, err) {
        console.log(JSON.stringify(err))
        if(err.msg=="Application not installed" || err.msg=="未找到可执行的应用") {
            showToast("请先安装高德地图");
        }
    });
}

//打开腾讯地图
function open_tmap(dname, lng, lat) {
    var uri = 'qqmap://map/routeplan?type=drive&fromcoord=CurrentLocation&to='+dname+'&tocoord='+lat+','+lng+'&referer=OB4BZ-D4W3U-B7VVO-4PJWW-6TKDJ-WPB77';
    api.openApp({
        uri: uri,
        iosUrl: uri
    }, function(ret, err) {
        console.log(JSON.stringify(err))
        if(err.msg=="Application not installed" || err.msg=="未找到可执行的应用") {
            showToast("请先安装腾讯地图");
        }
    });
}

//打开苹果地图
function open_pmap(dname, lng, lat) {
    var uri = 'http://maps.apple.com/?q='+dname+'&daddr='+lat+','+lng+'';
    api.openApp({
        uri: uri,
        iosUrl: uri
    }, function(ret, err) {
        console.log(JSON.stringify(ret))
        console.log(JSON.stringify(err))
    });
}

//百度坐标转高德（传入经度、纬度）
function bd_decrypt(bd_lng, bd_lat) {
    var X_PI = Math.PI * 3000.0 / 180.0;
    var x = bd_lng - 0.0065;
    var y = bd_lat - 0.006;
    var z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * X_PI);
    var theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * X_PI);
    var gg_lng = z * Math.cos(theta);
    var gg_lat = z * Math.sin(theta);
    return {lng: gg_lng, lat: gg_lat}
}
//高德坐标转百度（传入经度、纬度）
function bd_encrypt(gg_lng, gg_lat) {
    var X_PI = Math.PI * 3000.0 / 180.0;
    var x = gg_lng, y = gg_lat;
    var z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * X_PI);
    var theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * X_PI);
    var bd_lng = z * Math.cos(theta) + 0.0065;
    var bd_lat = z * Math.sin(theta) + 0.006;
    return {bd_lat: bd_lat, bd_lng: bd_lng }
}